Sock



FIG. 1 is a front perspective view of a sock showing my new design in an in-use configuration;

FIG. 2 is a side view thereof;

FIG. 3 is a second side view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines immediately adjacent ⁻to the shaded area represent unclaimed boundaries of the design. The broken lines showing the remainder of the sock are for environmental purposes only and form no part of the claimed design. 

CLAIM The ornamental design for a sock, as shown and described. 